A woman stands in the center of the composition, dressed in a voluminous black gown that sweeps outward across the lower half of the canvas. Her right hand rests lightly on the carved back of a red and gold chair, while her left is placed on her hip, giving her pose a sense of poise and confidence. The subject's head tilts slightly as she gazes directly outward, her lips closed and her expression calm, with dark hair softly framing her face.

A single pale yellow flower is fastened at her waist, standing out against the deep black fabric of her dress. Translucent sleeves end in loose ruffles at her wrists, and the dress’s surface catches subtle highlights, revealing the varied brushwork used to suggest folds and texture. Behind her, the wall is adorned with framed pictures, including one prominently displayed in the upper right portion of the background, rendered in warm ochres and golds.

The floor beneath her feet is painted in muted greens and browns, and the red chair’s legs and seat cushion are visible at the lower left edge of the scene. The light falls from the left, illuminating her face and the front of her dress while casting soft shadows that enhance the sense of depth and presence. The brushwork varies from broad, loose strokes in the background to more refined handling in the depiction of her face and hands, emphasizing her individuality and presence.

The composition balances the dark, sweeping mass of the dress with the vertical elements of the chair and the frames, creating a sense of stability and elegance. Señora de Sorolla (Clotilde García del Castillo, 1865–1929) in Black was created by Joaquín Sorolla in 1906.